Can Someone Please explain the bottom half of this picture for me
http://assets.openstudy.com/updates/attachments/5224b58ee4b06211a67f8a64-akashdeepdeb-1378141049945-gfff.jpg

Question

kayleahjb · Answer

@emmagrace231

priyar · Answer

post this in maths section

kayleahjb · Answer

i did no one is helping

abdullahsadiqi · Answer

@priyar   I hope you understand  please see the attached pic. 
you should now when two trigonal  are said similar ( when  theirs   two angels are equal to each other and it has some other roles . and understand that the small trigonal beside the ABC it means that it is a trigonal which its angles are A B C  , and when you see inverse V it means angle :P

abdullahsadiqi · Answer

you should post your this question on Mathematics section  they will make you understand .

emmagrace231 · Answer

I'm sorry. I don't know how to do this. You might get more help if you post it in algebra. Good Luck! :)